Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/iio/potentiometer/renesas,x9250.yaml
26309 views
1
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

2
%YAML 1.2

3
---

4
$id: http://devicetree.org/schemas/iio/potentiometer/renesas,x9250.yaml#

5
$schema: http://devicetree.org/meta-schemas/core.yaml#

6


7
title: Renesas X9250 quad potentiometers

8


9
maintainers:

10
  - Herve Codina <herve.codina@bootlin.com>

11


12
description:

13
  The Renesas X9250 integrates four digitally controlled potentiometers.

14
  On each potentiometer, the X9250T has a 100 kOhms total resistance and the

15
  X9250U has a 50 kOhms total resistance.

16


17
allOf:

18
  - $ref: /schemas/spi/spi-peripheral-props.yaml

19


20
properties:

21
  compatible:

22
    enum:

23
      - renesas,x9250t

24
      - renesas,x9250u

25


26
  reg:

27
    maxItems: 1

28


29
  vcc-supply:

30
    description:

31
      Regulator for the VCC power supply.

32


33
  avp-supply:

34
    description:

35
      Regulator for the analog V+ power supply.

36


37
  avn-supply:

38
    description:

39
      Regulator for the analog V- power supply.

40


41
  '#io-channel-cells':

42
    const: 1

43


44
  spi-max-frequency:

45
    maximum: 2000000

46


47
  wp-gpios:

48
    maxItems: 1

49
    description:

50
      GPIO connected to the write-protect pin.

51


52
required:

53
  - compatible

54
  - reg

55
  - vcc-supply

56
  - avp-supply

57
  - avn-supply

58
  - '#io-channel-cells'

59


60
unevaluatedProperties: false

61


62
examples:

63
  - |

64
    #include <dt-bindings/gpio/gpio.h>

65
    spi {

66
        #address-cells = <1>;

67
        #size-cells = <0>;

68
        potentiometer@0 {

69
            compatible = "renesas,x9250t";

70
            reg = <0>;

71
            vcc-supply = <&vcc_regulator>;

72
            avp-supply = <&avp_regulator>;

73
            avn-supply = <&avp_regulator>;

74
            wp-gpios = <&gpio 1 GPIO_ACTIVE_LOW>;

75
            spi-max-frequency = <2000000>;

76
            #io-channel-cells = <1>;

77
        };

78
    };

79


80